baber/WOPTO huggingface dataset:
Patent GB-1126138-A (GB)
Title: Improvements in the bulk preparation of vinyl chloride polymers and copolymers
IPC: C08F14/06
Filed: 1967-04-21
Abstract: 1,126,138. Polymerizing vinyl chloride. PRODUITS CHIMIQUES PECHINEY. SAINT-GOBAIN. 21 April, 1967 [22 April, 1966], No. 18497/67. Heading C3P. The bulk polymerization of vinyl chloride at - 40 to + 40 C. is effected in the presence of an initiator of the formula in which X is halogen and Y is hydrogen or halogen and R is a saturated or unsaturated aliphatic hydrocarbon radical of 1-9 carbons (including any substituents), a cycloalkane, cycloalkene, aromatic or heterocyclic radical or such a radical containing substituent groups. Comonomers may be present such as vinyl acetate, vinyl ethers, vinylidene chloride, alkyl fumarates, maleic anhydride, trans-dichloroethylene and styrene. The initiator may be used in the presence of trialkyl boron hydrazine and oxygen. In one example the vinyl chloride is prepolymerized using alpha-chloropropionyl peroxide at 40 C. until the initiator is destroyed and polymerization then completed using lauroyl peroxide. Other initiators used in single-stage examples are alpha-chlorocaproyl peroxide, alpha, alpha-dichloropropionyl peroxide and alpha, alpha, beta-trichloropropionyl peroxide.
Patent GB-443873-A (GB)
Title: Improvements relating to the weighting saddles of the drawing-rollers of spinning machines
IPC: D01H5/56
Filed: 1935-06-28
Abstract: 443,873. Drawing - - roller saddles. AKT.-GES. RIETER & CIE, J. J., Winterthur, Switzerland. June 28, 1935, No. 18596. Convention date, July 3, 1934. [Class 120 (ii)] The weighting-saddle 7 of the drawing-rollers of spinning - machines which engages the front and third top rollers is recessed at 9 to permit the ready removal of the top middle roller 2 for cleaning. The saddle is constructed from pressed synthetic resinous material to present smooth surfaces which minimize the collection of loose fibres.
Patent GB-1071457-A (GB)
Title: Improvements in or relating to the manufacture of polyurethanes
Inventor: MARKLOW RAYMOND JOSEPH
IPC: C08G18/50
Filed: 1965-05-04
Abstract: Polyurethanes are prepared by reacting an organic polyisocyanate with a tertiary amino group containing polyether polyol which is the product obtained by reacting an alkylene oxide with ammonia or an amino compound containing at least two active hydrogen atoms in the molecule in the absence of other basic materials. The amino compound may be one containing at least two secondary amino groups or at least one primary amino group, compounds containing at least one tertiary amino group and at least two active hydrogen atoms and compounds containing more than one type of functional group, e.g. ethanolamine, diethanolamine, diethylenetriamine, glucamine and N-methylglucamine. The alkylene oxides used to react with ammonia or the amino compound are suitably ethylene oxide, 1 2-propylene oxide and 1,2-butylene oxide.  Conventional aliphatic, cycloaliphatic and aromatic polyisocyanates may be used.  Water and/or a low boiling point liquid may be included in the reaction mixture to produce polyurethane foams.  Catalysts, such as tertiary amines and organic compounds of metals, surface active agents, foam stabilizing agents, colouring matters, fillers, plasticizers, flame retardants such as tris(b -chloroethyl)phosphate or antimony oxide and antioxidants such as tertiary butyl catechol may also be added to the reaction mixture. In an example an oxypropylated triethanolamine prepared without using a catalyst is used as the polyether.
Patent GB-1500286-A (GB)
Title: Circuit package
IPC: H05K5/06
Filed: 1975-04-28
Abstract: 1500286 Component assemblies DECCA Ltd 28 April 1975 [30 April 1974] 18850/74 Heading H1R A circuit package 1 (Fig. 1) comprises a body 2 machined from a cylindrical metal rod to leave an axial segmental aperture 3 bounded by end walls and surface 5 with ledges 6 and depression 7 therein. A microwave circuit board 8 resting on the ledges has a conductive ground plane in its lower surface 10 contacting the ledges and planar circuit elements on its upper surface 11; the boards overlying space 12 decoupled from the circuit. Ends 13 of body 2 carry connecting elements 14 in bores 15 having central protruding connectors 16 connected by ledges 17 of, e.g., gold wire or tape to the planar circuit. The enclosed space 3 is bounded by a close fitting sleeve 18, and the circuit board is retained in position by an elongate semicircular spring clip (Figs. 1a, 3a, 3b, not shown) whose ends 20 bear against the board positioned by lugs 21 and whose curved surface bears against the interior of the sleeve (Fig. 2). Two separate spring clips may be used located above each ledge, and the lugs may be extended to extend into a groove machined in the body (Fig. 3b, not shown). In a modification (Figs. 4, 5, not shown) two semicircular spring clips with hook ends engages the circuit board with their curved portions located in arcuate grooves of the body. The sleeve and body may be electron beam welded together for sealing, or elastomeric rings may be seated in annular grooves of the body or the body and sleeve may be sealed together by adhesive fillets or the sleeve may be peripherally deformed into a V-groove of the body (Figs. 7a to 7d, not shown). The body and sleeve may be of rectangular or alloys bi-section. Two circuit boards may be positioned in a single enclosure (Fig. 6, not shown) spring clipped to each side of a central shelf of the body with dual connectors at each end. The body and sleeve may be of aluminium or an alloy thereof, with a low pressure nitrogen or helium atmosphere therein.
Patent GB-757978-A (GB)
Title: Improvements in or relating to blades for the rotors of compressors, turbines and like machines
IPC: F16H41/28
Filed: 1950-11-27
Abstract: 757,978. Turbine and compressor blades. STALKER, E. A. Nov. 27, 1950, No. 18868/52. Divided out of 757,977. Class 110(3) A blade for a turbine or compressor rotor comprises a hollow aerofoil section made from sheet metal and formed with root flanges which project in opposite chordwise directions from the leading and trailing edges of the root, the flanges being adapted for engagement with and securing to spaced side plates of the rotor by a metal fusion process. The blades 30 in Figs. 2 & 3 have root flanges 36 each having an insert 37 and the root flanges are adapted for mounting in radially-disposed slots formed at the peripheries of rotor discs. In Fig. 3a the blade root is extended inwardly at 70 beyond the flanges 36, the extension having flanged portions 71 for engagement with the rotor discs. The subject matter of the present Specification is substantially the same as that of the parent Specification but the claims differ. Specifications 724,074 and 757,979 are referred to.
Patent GB-758491-A (GB)
Title: A machine for mechanically extracting fibres from the stems of textile plants
IPC: D01B1/22
Filed: 1954-06-28
Abstract: 758,491. Obtaining fibres from-plant stems. PICCIATI, A. June 28, 1954, No. 18884/54. Class 120 (1). In a machine for extracting textile fibres from plant stems, material fed to the machine through a mouthpiece 1 passes between pairs 2 and 3 of smooth steel crushing cylinders, rollers 2 being spring-pressed together and rollers 3 being on fixed axes; the crushed material then passes as a ribbon vertically downwards through groups A-E of working members; each working group consists of two pairs of feed and delivery rollers, each comprising a rubbercovered roller 4 and a smooth steel roller 5 spring-pressed together, and an intermediate pair of toothed cylinders 6, the cylinder teeth 38 are shaped as shown in Fig. 5 and intermesh with clearances; rollers 4, 5 are driven at the same peripheral speed in all groups, while cylinders 6 have a peripheral speed which increases from the first to the last group but is less than that of rollers 4, 5. The angular position of the teeth of one cylinder is adjustable with respect to those of the other as shown in Fig. 6; the cylinder shafts are geared together by gears 33, 34 ; gear 33 is fixed on its shaft, while gear 34 is loose on its shaft but carries a block 35 adjustably engaged by means of screws 36 with a stirrup 37 fixed to the shaft. Mouthpieces 8, 9, 10 are located in front of each group to laterally condense the ribbon of material fed to the group. The vibratory action of the cylinders 6 removes the woody matter from the fibres; this waste matter falls into hoppers 17 whence it is removed by an exhauster 14, while the fibre is removed by a conveyer belt 12.
Patent GB-1151771-A (GB)
Title: Novel Laminations.
IPC: B42D15/10
Filed: 1966-04-29
Abstract: 1,151,771. Protective layer for diffusion transfer photographs. INTERNATIONAL POLAROID CORP. April 29, 1966 [April 29, 1965], No. 19033/66. Heading G2C. A protective layer is formed on a diffusion transfer colour photograph by laminating a preformed transparent layer, comprising a film having a surface layer which consists essentially of a polymer containing hydroxyl groups, to said photograph by pressing the said surface layer to the image surface of the photograph in the presense of moisture, the amount of moisture and the nature of the image surface of the photograph being such that a permanent bond is formed. The transparent layer may comprise polyvinyl alcohol, cellulose, copolymers of vinyl alcohol with vinyl acetate, hydrolyzed polyvinyl acetate or cellulose ester, embossable poly(vinyl chloride/ vinyl acetate) coated with poly (vinyl chloride/ vinyl ester) where the ratio of vinyl chloride/ vinyl ester is no greater than 1:1 and the vinyl ester is surface hydrolyzed or cellulose acetate butyrate coated with cellulose nitrate, cellulose nitrate and hydrolyzed polyvinyl acetate and polyvinyl alcohol in which the cellulose acetate butyrate layer may be coated with a mar-resistant layer of polymerized polyethylene glycol dimethacrylate. The embossable layer may complete an evelope surrounding the photograph. The image layer may be polyvinyl alcohol poly (4-vinyl pyridine). The photograph may be laminated while still wet from processing or treated with water which may contain polyvinyl alcohol.
Patent GB-201022-A (GB)
Title: Improvements in valves
IPC: F16K43/00
Filed: 1922-07-11
Abstract: 201,022. Maxwell, J. D. July 11, 1922. Lift valves ; closure members; stops, adjustable; leakage, stopping. -A lift valve operated by a screwed spindle is provided with two closure members acting on opposite sides of the seating, one being rotatably mounted on the spindle, and the other in screwed engagement with it. The cross partition 9 of the casing is provided with two opposed seats 10, 11, engaged by closure members 12, 13. The member 12 is rotatably mounted on the spindle 14, and the member 13 contains a screwed socket 18 engaging with the screwed end 19 of the spindle, the member being non-circular to prevent rotation. A spring 22 is provided to press the lower valve to its seat, so that this valve remains seated if the upper valve is withdrawn. If both valves are seated, and the spindle is rotated, the lower valve remains seated while the spindle carrying the upper valve rises. When the collar 15 engages with the cover 6, the upward movement of the spindle ceases, and the lower valve is then forced downward. A vent passage may be provided to prevent accummulation of pressure in the recess 18. The lower valve may be forced against its seating by a screw 23 which may be locked by a nut 27. Leakage along this screw may be prevented by means of its conical head, and the nut 27, both of which may engage the casing. This screw also serves as an adjustable, stop to limit the opening of the lower valve. When the lower valve is closed, the upper valve may be removed for repairs, and a cap 7 is also provided for the removal of the lower valve when required.
Patent GB-440645-A (GB)
Title: A new or improved form of spool for textile yarns
IPC: B65H75/24
Filed: 1934-06-28
Abstract: 440,645. Spools. BRANDWOOD, J., 2, Westbourne Road, Birkdale, Southport, Lancashire. June 28, 1934, No. 19071. [Class 120 (iii)] A flangeless spool upon which thread is wound for dyeing is made from one continuous length of wire bent to form portions 1 .. 1<g> parallel to the longitudinal axis and, spaced equidistantly therearound and end portions 2 .. 5 and 2<a> . . 5<a> connecting the ends of the portions 1 .. 1<g> at right angles thereto and in staggered relation with regard to the ends of the spool to maintain the portions 1 .. 1<g> at their predetermined distances apart; the end portions may be arcuate as shown or straight. Specification 294,504, [Class 15 (i)], is referred to.
Patent GB-1346858-A (GB)
Title: Transducers in aircraft control sticks
IPC: G01L5/22
Filed: 1972-04-25
Abstract: 1346858 Control transducer SPERRY RAND CORP 25 April 1972 [10 May 1971] 19071/72 Heading G1N A control stick for an aircraft includes a transducer which responds to movements of a handle attached at 39, the transducer comprising a shaft 45 which is mounted on flexible members 71, 87 so as to be pivotable about a point 91 to operate a plurality of strain gauge elements 49, 51, 53, 55 and 57, 59, 61, 63 which are disposed in two orthogonal directions for both pitch and roll commands the elements being of the type disclosed in Specification 1346373. A counterbalance 69 at the end of the shaft has a moment of inertia equal to that of the handle, and stops 97, 99 are provided.
Patent GB-392769-A (GB)
Title: Improvements in or relating to low temperature carbonization retorts
IPC: C10B1/04
Filed: 1932-07-06
Abstract: 392,769. Retorts for low-temperature carbonization. SHARP, F. F., 6, Baring Avenue, Bradford, Yorkshire. July 6, 1932, No. 19079. [Class 55 (i).] The carbonizing-chamber comprises a pair of solid side-plates 1 which are heated and carry between them two sets of louvres 2 arranged on edge in staggered formation, and distanced apart, to provide passages for the escape of distillates. The chamber is built into a brick structure 3 having side heating flues 4, and the distillates escape into a space 7 around the louvres. The retort is thus heated on two opposite sides, and the distillates pass through the other two sides. Two chambers may be arranged side by side in one brick structure. In a modification, Fig. 8, the louvres 2 are arranged in the same inclined plane, and afford upwardly inclined passages for the escape of distillates.
Patent GB-1017454-A (GB)
Title: Process for preparing dyeable textile fibres and articles thus obtained
IPC: D06P3/79
Filed: 1963-05-14
Abstract: 1,017,454. Melt-spinning polyolefine compositions. MONTECATINI SOC. GENERALE PER L'INDUSTRIA MINERACI E. CHIMICA. May 14, 1963 [May 18, 1962], No. 19085/63. Heading B5B. Filaments, films &c. are made by meltextruding a composition comprising a polyolefine consisting prevailingly of isotactic macromolecules and from 1 to 25% by weight (based on the weight of the composition) of polyepichlorohydrin. The filaments &c. thus obtained, either before or after being stretched, may be treated with one or more aliphatic, aromatic or heterocyclic amines or imines. Alternatively, the amines or imines may be incorporated in the mixture prior to extrusion. The polyolefines are obtained by low pressure polymerisation with stereospecific catalysts and may be polyethylene, polypropylene, polybutene-1, polypentene-1, poly-4-methylpentene- 1, or polystyrene, polypropylene being preferred. The polyepichlorohydrins are preferably obtained by stereospecific polymerization of epichlorohydrin in the presence of catalytic systems. Examples of these are given. The polymeric mixture may be prepared by mixing the solid polymers or by mixing the polyolefine with a solution of the polyepichlorohydrin in a volatile solvent which is subsequently evaporated off. In the production of filaments from the molten mixtures spinnerets whose holes have a length/diameter ratio greater than 1 are preferably used. Spinning is preferably carried out in an inert gas such as nitrogen. The spinning melt preferably contains a small proportion of a dispersing agent. Examples of these are furnished. The stretching of the filaments may be effected at 80‹ to 150‹ C. at stretch ratios of 2 : 1 to 10 : 1 in steam andthey may thereafter be heat set with free or controlled shrinking at temperatures of 80‹ to 160‹ C. The treatment of the filaments &c. with amines or imines may be carried out at temperatures between room temperature and 10‹ C. below the melting-point of the polymer, and the amines or imines may be in solution with an article : bath ratio of 1 : 10 to 1 : 50. The treatment time may range from 2 seconds to 24 hours. The amine or imine may be ethylene diamine, trimethylene-diamine, diethylene triamine, tetramethylene pentamine, ethyleneimine, polyethyleneimine, p-methandiamine, n-dodecylamine, n-octadecylamine, or piperazine and its derivatives The filaments &c. of the invention may be further treated with reagents which render the modifier component of the filaments completely insoluble in water. Examples of such reagents are mono- or diepoxy compounds, mono- and diisocyanates mono- or dialdehydes, halogens or divinylbenzene. The filaments &c. may be treated with an acid, particularly sulphuric acid. Filaments &c. made according to the invention have improved dyeability.
Patent GB-615491-A (GB)
Title: Improvements in or relating to baling machines
IPC: B65B27/12
Filed: 1946-06-26
Abstract: 615,491. Electric welding. MOSS, E. W. (Toronto Star, Ltd.). June 26, 1946, No. 19157. [Class 83 (iv)] [Also in Group XVII] Relates to a baling press for papers in which after compression of the papers by a ram 7, binding wire is secured around the bale and consists in means for holding the wire. The wire W is bent around the sides of the bale by reciprocating grooved plates 21, the upper portions of which are recessed and carry pivoted members that engage cam surfaces on the ram 7 and fold the wire over the top surface of the bale into a groove 7x on the ram 7 so that vertically sliding fingers 147 force the overlapping wires on to an anvil 149 and an electrode 151 is swung on to the ends by a ram 155. The welding circuit is completed by one of the plates 21 closing a switch g mounted on the ram so operating a relay R3. The current through the electrodes is broken by the closure of a switch h by a ram fed with compressed air from the ram 155 through a throtling valve. Specification 547,364 is referred to.
Patent GB-926765-A (GB)
Title: Improvements in or relating to polymerization catalysts and to polymerization processes using said catalysts
IPC: C08F10/00
Filed: 1960-05-31
Abstract: Polymerizable unsaturated organic compounds may be polymerized by passing over a solid catalyst consisting of an organo-metallic compound wherein a metal of Group II or III of the Mendel<\>aeeff Periodic Table is directly linked to a carbon atom of an alkyl group or monovalent aromatic hydrocarbon group, said compound being carried by an inert support material and said catalyst being free from any other material capable of modifying or promoting the catalytic activity of said organometallic compound.  The organometallic compound may be an aluminium trialkyl, dialkyl chloride or dialkyl bromide, or may contain beryllium, gallium or indium.  The inert supporting material may be an amphoteric oxide, e.g. alumina or alumina/silica composites, or may contain platinum, e.g. in the form of a spent platforming catalyst.  The support may be treated with the organometallic compound in the gaseous, liquid or solid phase, in the absence or presence of an inert diluent such as heptane.  Specified polymerizable compounds are ethylene, propylene, butene, dienes, polyenes and acetylenes. In an example ethylene is polymerized in the presence of a catalyst formed by impregnating a bed of pellets of a commercial platforming catalyst with a solution of triethyl aluminium in heptane, and product extracted with boiling toluene and the polymer precipitated with ethanol.  The product is further extracted with boiling cyclohexane.
Patent GB-147441-A (GB)
Title: Improvements in electronic tubes
IPC: H01J1/14
Filed: 1920-07-07
Abstract: 147,441. Ges. f³r Drahtlose Telegraphie. Jan. 23, 1918, [Convention date]. Vacuum tubes.-A cathode for a three-electrode valve is formed of a metal of the alkaline-earth group such as calcium or magnesium. The tube may contain hydrogen or one of the rare gases.
Patent GB-751907-A (GB)
Title: Improvements in or relating to constructions of the flow channel on the input and output sides of the rotor in radial flow compressors
IPC: F04D29/44
Filed: 1954-07-01
Abstract: 751,907. Centrifugal compressors. MASCHINENFABRIK AUGSBURG - NURNBERG AKT.-GES. July 1, 1954 [July 1, 1953], No. 19377/54. Class 110(1) In a radial-flow compressor, especially a centrifugal compressor, the cross-sectional area of the inflow channel 3 decreases progressively towards the intake aperture of the rotor 1, there being a considerable restriction formed in the channel at A shortly before entry into the bladed part of the rotor, and a decrease in cross-sectional area occurs in the annular passage 4 between the rotor exit and the entry to guide blading 5. The walls of the passage 4 may be initially substantially parallel, with a considerable restriction similar to that at A and adjacent the guide blading 5. To reduce noise, the radial extent of the passage 4 is made approximately equal to one-tenth the external diameter of the rotor.
Patent GB-219497-A (GB)
Title: Improvements in and relating to electric heating and cooking apparatus
IPC: H05B3/68
Filed: 1923-07-28
Abstract: 219,497. Bohle, H. July 28, 1923. Wire resistances, encased; enclosed; threaded; mounted on flat, curved, or grooved surfaces. - Electric heating elements comprise a wound and insulated resistance element f enclosed within a recess in the upper face of an asbestos or like pad secured between a base-plate a and a deeply finned heat-radiating member k ot aluminium or the like by a central detachable bolt m. The resistance is enclosed between mica sheets g, j. Steam packing n may be inserted between the edges of the plates a, k. In a modification, the resistance is situated in undercut grooves in a porcelain block and covered with a sheet of mica. The plate a is recessed to receive the bottom of the block and an asbestos pad is placed between the two. In another modification, the resistance is enclosed in silica tubes.
Patent GB-299087-A (GB)
Title: Improvements in or relating to tail skids for aeroplanes
IPC: B64C25/50
Filed: 1927-07-21
Abstract: 299,087. Vickers, Ltd., and Pierson, R. K. July 21, 1927. Skids; shock-absorbers, applications of.-A tail-skid B is mounted at its forward end on a vertical pivot forwardly inclined as shewn so that it will assume a trailing position. The pivot B<1> on the skid enters a socket C on a pyramidal linkage C<2>, C<3> and is connected thereto by a bolt C<1>. The link C comprises a shock-absorber having a dust cover C<2x>. The skid has a plough B<2> and a streamline shield B<3>.